Sheet-delivery apparatus for printing-machines



2 Sheets-Sheet 1.

NO Model.)

W. SCOTT. SHEET DELIVERY APPARATUS FOR PRINTING MAoEIIIEs. No. 396,896.

Patented Jan. 29, 1889.

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(No Model.) 2 Sheets-Sheet 2 W. SCOTT. SHEET DELIVERY APPARATUS FORPRINTING MAGHINES. No. 396,896. Patented Jan. 29, 1889.

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UNITED STATES PATENT OFFICE.

\VALTER SCOTT, 0F PLAINFIEIAD, NE\V JERSEY.

SHEET-DELIVERY APPARATUS FOR PRINTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 396,896, dated January29, 1889.

Application filed March 2, 1888. Serial No. 265,921. (No model.)

To all whom it may concern.-

Be it known that I, WALTER Sco'r'r, of Plain'field, in the county ofUnion and State of New Jersey, have invented an Improvement inSheet-Delivery Apparatus for Printing-Machin es, of which the followingis a specification.

This invention applies to that class of printing-machines in which twosheets are printed at each rotation of the type-cylinder, and suchsheets are out apart and one sheet laid upon the other previous to thefolding operation being performed.

In my presentimprovements the sheets are printed and cut as usual, andthen they are com'eyed away by tapes, two sheets being carried to onefolding apparatus, and then the next two sheets are carried to the otherfolding apparatus, so that the necessary time elapses between thedelivery of the pairs of sheets for the respective folding operations tobe performed. \Vhere one sheet is carried forward over thefolding-rollers and beneath. the folding-blade, difficulty has beenexperienced in introdueii'ig the next sheet, because the rear end of thefirst sheet liable to catch the advancing end of the second sheet. In mypresent improvements the sheets are delivered over a roller or bar andpass along to place for folding upon tapes or rods, and as the rear endof the first sheet passes clear of the roller or bar depressing-fingersare made to act upon the rear end of such sheet to carry it down belowthe path of the advancing end of the next sheet, and the movement givento these fingers is instantaneous, so that the fingers are not in theway of the front end of the next sheet.

In the drawings, Figure 1 is a diagrammatic View representing thecutting-cylinders, conveying belts or tapes, and portions of the foldingdevices. Fig. 2 illustrates the gearing that may be made use of forgiving motion to the respective parts, and Fig. is a detached view ofpart of the blade forming the fingers 53. V

The cutting-cylilulers A and B are of ordi nary construction, and theyare usually half the diameter of the type and impression cyl' inders, soas to make two revolutions and out the web into two sheets for eachcomplete impression. The tapes or bolts 2 and 3 are for conveying awaythe printed sheets. These tapes pass around rollers, as usual, to conveythe sheets to the respective points of delivery, the tapes or belts 2passing around the rollers 4, 5, 6, 7, 8, 0, 10, and 1l,the rollers 10and'll being fitted, as usual, upon arms, so as to tighten the beltsfrom time to time, and the tapes or belts 3 pass around the rollers 1213 ll 15 l6 l7 7 (3 5, the rollers 15 being upon arms for tighteningthis range of belts 3.

It will be apparent that the tapes 2 and 3 pass together over the roller5, and at this point the sheetis nipped, and the belts, travelin fasterthan the periphery of the euttii'igcylinders, pull. the one sheet awayfrom the next, so as to separate and accelerate the sheets insuccession, and such belts also pass together around the roller 6 and upto the roller 7, and above this roller 7 is a switch, D, upon thecross-rod or rock-shaft 20, which is moved periodically by a cam, E, androller 21, so as to allow the sheets to pass around the roller 7 upon,thebelts 2 and below the roller 8 and overthe folding-roller 1 or else,when the switch I) is in the position shown by dotted lines, the sheetsare carried up by the belts 3 over the roller 17 and along by the belts25 over the folding-rollers G. These belts 25 pass around the rollers 17and along parallel to the folding-rollers G and around the pulleys 2G,and there are also bolts 27 passing around the rollers 16 and 30 to aidin conveying the sheets to the folding-rollers G.

It is to be understood that the respective rollers 7 Ill 17 are made ofpulleys, so as to allow for the movements of the switch D and for theseparate sets of belts as they pass ot't' in dilterent directions fromone roller. I also make use of the sets of belts or tapes 32 passingaround the rollers and moving parallel, or nearly so, to the belt 2,where it passes from the roller 9 to the rollers S and 10, respectively,and I employ another set of belts, 35, passing around the rollers 3i 836 37, so as to travel adjacent to the belts 2 between the rollers 7 SEi-l.

The cam E acts upon the switch D in such a manner that. two sheets areallowed to pass around the roller 7,beneath the rollers 8 and 34, andover the folding-rollers F, and stop against the :fence 40, and the nexttwo sheets are carried up over the switch D to the roller 17 and passbetween the belts 3 and 25 to the roller 10, and thence between 25 and27 along over the roller G to the fence 41.

The special feature of my present improvement relates to the cross-baror roller 50 and the range of bars or guides 51, that slope up to thesame, so that the sheets as they pass along successively between theranges of tapes 25 and 27 pass over the bars 51 and across the roller orbar-50, and adjacent to this roller or bar 50 are the reciprocatingfingers or blades 53, actuated by cams 54, that move the rollers andvertical slides 55, the said fingers or blades 53 being upon thecross-bar between the vertical slides 55, and the parts are so timedthat at the moment the rear end of the first sheet pa over the cross-baror roller 50 the fingers 53 are brought down upon the same to force therear end of the sheet down below the top of this cross-bar or roller 50,and then these fingers 53 are instantly raised up again, so that theadvai'icing end ofthe next sheet is free to pass under such fingers 53and over the first sheet as it lies upon the tapes 25 with its front endagainst the fence or gage 41. In this manner I am able to pass one sheetover the other reliably, and to prevent the rear end of the first sheetinterfering with the forward end of the second sheet, and there is afree space between the under side of the tapes 27 and the first sheet,as such first sheet lies upon the belts or tapes 25 and the rollers G,so that the second sheet is uninterrupted in its movement, and after itarrives at the fence or gage 41 the foldingblade is brought down topress the sheets in between the rollers G and fold the sameyas usual infolding machines. Precisely the same operation takes place upon the twosheets that are carried away between the belts or tapes 2 and 32. Theroller or crossbar is above the folding'rollers F and between the tapes2 and 32, and the inclined bars or guides (31 serve to elevate the sheetand carry it over the cross-bar (30, and the fingers or blades (33 actupon the rear end of the first sheet to press the same down adjacent tothe cross-bar (30 and allow space for the advancing end of the secondsheet, and the cam Get. gi vesnmti on to the slide I35 and thecross-piece carrying the fingers or blades 63.

It is preferable to make use of plates snitably notched at the placeswhere the belts or tapes come in the respective ranges of belts to formthe fingers or blades 53 (33, so that the paper will be acted uponuniformly through-. out its width, except at the places occupied by thetapes.

It will be understood that the printingcylinders may contain more thantwo sets of plates or printing-surfaces, and that the switch D may bemoved and timed so as to pass all the sheets cut off that form onesignature to one set of fold-ing-rolls, and then all the sheets thatform the next signature to the other set of folding-rolls. a i

' hen the .machine is not running at a high rate of speed, the sheetswill descend sufficiently fast by gravity for the second sheet to be runin over the first without using the fingers 53; or a puff of air from aperforated pipe maybe used in place of the fingers 53.

It will be apparent that the belts or tapes 3 may extend along andaround the roll 30 in place of the separate belts 27, and that the beltsmay extend along to and around the roll 33 inv place of the separatebelts 32.

The roller or cross-bar 50, over which the sheets are carried by theaction of the belts, is not limited to any particular folding device,but may beused where the fence at]. is raised to let one group of sheetspass on to the folding mechanism and depressed to detain the next groupof sheets.

In Fig. 2 l have represented trains of gearing that may be made use offor giving motion to the respective parts, and in this figure I have putupon the shafts for the respective gear-wheels the same letters ofreference as are employed upon the respective rollers or cams, so as toidentify the gear-wheels with the devices that are driven by them. 1,however, do not limit myself to driving the parts by any such train ofgearing, as the parts may be actuated in any suitable manner. It will beunderstood that, in place of the respective ranges of tapes or belts 25and 27 and 2 and 32 at the folding-rollers F and G, stationary barsmight be made use of, between which the sheets are caused to move, suchbars being the known equivalents of the tapes or belts.

It will be. apparent that the folding-rolls may occupy the position shown by dotted lines in Fig. 1, so as to stand at right angles to thepositions represented in full lines.

I claim as my invention 1. The combination, with the folding-rolls andfence and the tapes or belts for convey-- ing the sheets to suchfolding-rolls, of the cross-bar or roller, the stationary guides or rodsover which the sheets are passed, the fingers acting adjacent to thecross-bar, and the cams for giving the proper movements to such fingers,substantially as set forth.

2. The combination, with the folding-rolls and the fence for stoppingthe sheets, and the tapes for conveying such sheets to the foldingrolls,of the cross-bar or roll and the inclined rods or guides, over which oneset of the tapes pass for moving along and delivering the sheets overthe cross-bar orroller, substan- 'WALTER SCOTT.

Vitn esses:

WILLIAM G. .Mor'r, HAROLD SERRELL.

